JLG DVSP Series Service Manual - Manual (Page 47)

SECTION 3 - BASE COMPONENTS
3121136 – JLG Lift – 3-17
Gear Box Disassembly/Assembly
(See Figure 3-8.)
The drive motor gear box is mounted on the rear of each
drive motor. Transferring power from the electric drive motor
to the rear drive wheels, the gear box is a right angle worm
gear type with a 40:1 reduction drive ratio. The internal gears
and bearings of the gear box are lubricated by 6 oz. (176cc)
of gear oil in an unvented aluminum alloy housing. The fol-
lowing procedures disassemble and assemble the gear box
housing internal components.
Gear Box Disassembly
1. Remove the drive motor/gear box/brake assembly
from the machine using the procedure outlined pre-
viously in this section of the manual.
NOTE: The gear oil can be drained out when the side cover
is removed in the next step. Remove the side cover
from the gear box with the drive shaft side pointing
down, then tilt drive motor/gear box assembly to
drain the oil into a suitable container.
2. Remove the four (4) hex cap screws securing the
side cover to the gear box housing, and remove the
side cover and rubber seal ring. (Note: Early model
machines did not have the rubber seal ring and were
sealed with sealant only.) Be careful not to scratch or
gouge the mating surfaces between the cover and
the gear box housing. This area is sealed by the rub-
ber ring/sealant and may leak oil if damaged.
3. Remove the wave washers from atop the large and
small bearings and lay inside their respective holes
in the side cover.
1. Gear Box Cover 5. Spacer 9. Drive Shaft 13. Shaft Key
2. Cover Screws 6. Gear 10. Shaft Seal 14. Bearing (32 x 12 x 10mm)
3. Wave Washer 7. Bearing (47 x 25 x 12mm) 11. Shaft Key 15. Wave Washer
4. Bearing (47 x 20 x 14mm) 8. Lip Seal, Bearing, Retaining Ring 12. Gear & Pinion 16. O-Ring
Figure 3-8. Drive Motor Gear Box Assembly - DVL/DVSP.